<template>
  <div style="text-align: center;border-radius: 8px;width: 350px;height: 450px;border: 2px solid var(--el-border-color);">
    <div style="font-size: 25px;margin-top: 30px;font-family: STXINWEI">注册</div>
    <div style="margin-top: 20px;margin-left: 10px;margin-right: 10px">
      <el-form :model="form" :rules="rules" @validate="onValidated" ref="formRef">
        <el-form-item prop="username">
          <el-input v-model="form.username" type="text" placeholder="用户名">
            <template #prefix>
              <el-icon><User /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="form.password" type="password" placeholder="密码">
            <template #prefix>
              <el-icon><Lock /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password_repeat">
          <el-input v-model="form.password_repeat" type="password" placeholder="重复密码">
            <template #prefix>
              <el-icon><Lock /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="email">
          <el-input v-model="form.email" type="email" placeholder="邮箱">
            <template #prefix>
              <el-icon><Message /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="code">
          <el-row :gutter="10" style="width: 100%">
            <el-col :span="17">
              <el-input v-model="form.code" type="text" placeholder="请输入邮箱验证码">
                <template #prefix>
                  <el-icon><EditPen /></el-icon>
                </template>
              </el-input>
            </el-col>
            <el-col :span="5">
              <el-button type="primary" @click="validateEmail"
                         :disabled="!isEmailValid || coldTime > 0 ">
                {{coldTime > 0 ? coldTime + '秒' : '获取验证码'}}
              </el-button>
            </el-col>
          </el-row>
        </el-form-item>
      </el-form>
      <div style="margin-top: 30px">
        <el-button @click="register" type="success" style="width: 250px" plain>注册</el-button>
      </div>
      <div style="margin-top: 10px">
        <el-link @click="router.push('/')" type="info">回到登录界面</el-link>
      </div>
    </div>
  </div>
</template>

<script setup>
import router from "@/router";
import {reactive,ref} from "vue";
import {ElMessage} from "element-plus";
import {post} from "@/utils";
import axios from "axios";

const form = reactive({
  username: '',
  password: '',
  password_repeat: '',
  email: '',
  code: ''
})

const validateUsername = (rule, value, callback) => {
  if (value === '') {
    callback(new Error('请输入用户名'))
  } else if(!/^[a-zA-Z0-9\u4e00-\u9fa5]+$/.test(value)){
    callback(new Error('用户名不能包含特殊字符，只能是中文或英文'))
  }else {
    axios.get('/api/auth/check-username', {
      params: {
        username: form.username
      }
    }).then(response => {
      if (response.data) {
        callback();
      } else {
        callback(new Error('该用户名已被占用'));
      }
    }).catch(error => {
      console.error('检查用户名时发生错误:', error);
      callback(new Error('检查用户名时发生错误，请稍后再试'));
    });
  }
}

const validatePassword = (rule, value, callback) => {
  if (value === '') {
    callback(new Error('请再次输入密码'))
  } else if (value !== form.password) {
    callback(new Error("两次输入的密码不一致"))
  } else {
    callback()
  }
}

const rules = {
  username: [
    { validator: validateUsername, trigger: ['blur','change'] },
    { min: 1, max: 15, message: '用户名长度在1-15个字符之间', trigger: ['blur','change'] },
  ],
  password: [
    { required: true, message: '密码不能为空', trigger: 'blur' },
    { min: 6, max: 16, message: '密码长度在6-16个字符之间', trigger: ['blur','change'] },
  ],
  password_repeat: [
    { validator: validatePassword, trigger: ['blur','change'] }
  ],
  email: [
    { required: true, message: '请输入电子邮件', trigger: 'blur' },
    { type: 'email', message: '请输入合法的电子邮件地址', trigger: 'blur' },
  ],
  code: [
    { required: true, message: '请输入验证码', trigger: 'blur' },
  ]
}

const formRef = ref()
const isEmailValid = ref(false)
const coldTime = ref(0)

const onValidated = (prop,isValid) => {
  if (prop === 'email'){
    isEmailValid.value = isValid
  }
}

const register = () =>{
  formRef.value.validate((isValid) => {
    if (isValid){
      post('api/auth/register',{
        username: form.username,
        password: form.password,
        email: form.email,
        code: form.code
      },(message)  => {
        ElMessage.success(message)
      },(message) => {
        ElMessage.warning(message);
      })
    }else {
      ElMessage.warning('请完整填写表单内容')
    }
  })
}

const validateEmail = () => {
  coldTime.value = 60
  post('/api/auth/valid-register-email',{
    email: form.email
  }, (message) => {
    ElMessage.success(message)
    setInterval(() => coldTime.value--,1000)
  },() => {coldTime.value = 0})
}

</script>

<style scoped>

</style>